Improvement in force-pumps



UNITED 4STATES PATENT CFFICE OHARLESE. MCKEEHAN, 0E TEXARKANA, ARKANSAS,AsSiGNoE To HIM- SELE AND vlEeIL TAcITUs HANNON, on SAME PLAGE.

IMPROVEMENT IN FORGE-PUMPS.

Specification forming part of Letters Patent No. 186,594, dated January23, 1877; application filed4 November 28, 1876. i

v Zo all 'whom it may concern Be it known that I, CHARLES H. MoKEE- HAN,of Texarkana, in the county of Miller 4and State of Arkansas, haveinvented a new and useful `Improvement in Force-Pumps; and

I do hereby declare that the following is a full, clear, andexactdescription of the same.

AThe object of my invention is to provide a y cheap yet durable andefficient double-acting reciprocating force-pump, applicable chey insituations where a submerged pump vis required.

Ihe iniprovementrelates to the construction and arrangement of' parts,as hereinafter i described.

In the Vaccompanying drawing, forming part ot'vthis specitication,Figure 1 is a partlysectional elevation of my improved pump. Fig. 2 isan end elevation of thehpump, with part ot' the frame-work broken away.Figs.

passages a, which open at the bottom of the pump, and are provided witha centrally-pivoted fourarmed valve, E', having an arm, c, by which itmay be operated to open or close the passages a, and thus ,regulate thesupply or shut it oit altogether. The receiving-chamber A is veryshallow, and fo med by recessing the upper side ot' the bloc F. The morecapacious exhaust-chamber B is formed in the middle of the block G,which isfplaced upon block A, and secured thereto by means of screws orbolts. The communication between the chambers A B is by means of thevertical passages c c, which are provided with valves d, for preventingthe return ot' water. The four pistons or plungersD work verticallythrough the block F, each directly over a flap-` valve, e, which yalternately opens and closes an induction-passage, a. `The pistons arereciprocated in pairs alternately, those diagonally opposite beingoperated together. The

mechanism I employ for operating them consists of a rotary drum orshaft, H, and levers lthat as the slotted end of one lever is raised thecorresponding end of the other is depressed, so that the levers vibrate,as it were, revers'ely. Il

.Rotary motion may be imparted to the drum by a belt-connection from anysuitable Y motor.;

Supposing the pump to be submerged, and the valve E open, the rotationof the drum or shaft H will cause the levers I to vibrate re versely,and the plungers to .reciprocate in pairs. The'valves E will open inpairs correspondingly, and thus admit the water to chamber A, whence itpasses into chamber B, and is iinally dischargedat C.

I do not claim the combination, in a pump, 'ot'alternately reciprocatingpistons and a re' eeiving and exhaust chamber; but

l. The combination of block G, containing the exhaust-chamber B andpassages, as de# scribed, the block F, having the recess or receivingchamberA and ports a, the` valves d d and e e, and plungers D D, asshown and described.

2. The centrally-pivoted four-armed valve E, having the bent lever-arm cfor operating it, in combination with the induction-ports a, as shownand described.

Witnesses H.' E. GULLAN, J. G. FERGUSON,

